This script is interactive

Meaning it can take input from the user,

Bash

#!/bin/bash

# array
numbers=()

# Begging for input
echo "Enter numbers to add to the array. Type 'done' when you are finished:"

# Read user input in a loop
while true; do
    read -p "> " input  # Prompt for input
    if [[ "$input" == "done" ]]; then
        break  # Exit the loop if the user types 'done'
    elif [[ "$input" =~ ^-?[0-9]+$ ]]; then
        numbers+=("$input")  # Add the number to the array
    else
        echo "Please enter a valid number or 'done' to finish."
    fi
done

# Display the numbers in the array
echo "You entered the following numbers:"
for num in "${numbers[@]}"; do
    echo "$num"
done

# Calculate the sum of the numbers in the array
sum=0
for num in "${numbers[@]}"; do
    sum=$((sum + num))  # Add each number to the sum
done

# Display the sum
echo "The sum of the entered numbers is: $sum"